Bison 3, 4 & 6 Jaw Set-Tru Scroll Chucks Hard Reversible Jaws

Bison 3, 4 & 6 Jaw Set-Tru Scroll Chucks Hard Reversible Jaws

• SET-TRU Scroll Chucks can be used for all machining operations where universal chucks are used, along with applications where universal scroll chucks require tighter tolerances
• Outstanding accuracy, versatility and long life make SET-TRU chucks invaluable in the modern workshop and indispensable in the toolroom

Features of 6-Jaw SET-TRU Chucks:

• The 6 jaws grip firmly with less pressure and less distortion per jaw
• Ideal for thin wall and second operation work
• Eliminates the need for spring collets

SET-TRU Chuck Features and Benefits:

• Fine adjustment
• Available with forged steel body or semi-steel body
• 3 pinion design
• 4 micro adjustment screws provide .0004" T.I.R. repeatability
• 16", 20" and 25" diameter chucks with 3 jaws and 6 jaws use 8 micro adjustment screws achieving extremely high gripping concentricity
• Two piece top and master jaws are American Standard tongue and groove
• 4" diameter chuck has 2 sets of solid jaws
• Scrolls are forged and fully hardened with thread flanks ground on both sides, then precisely balanced for longer life and higher accuracy
• Each scroll is precisely balanced
• Jaw teeth and guides on both sides are fully hardened and ground. Hardened and ground bushings are pressed into the pinion seats. Pinions in 3 pinion models are hardened and ground
• Each chuck is balanced within fine limits 
• Steel mounting plates are interchangeable with SET-TRU chucks of the same size so that one chuck can be used on different spindles
• The life of your chuck can be extended significantly through proper maintenance and must be cleaned on a regular basis as recommended